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Leopard Reference: Internet & Web
A collection of Objective-C APIs for client-side web and internet development. For example, you can embed a web browser in your desktop application or implement an HTML editor using Web Kit. There are APIs for accessing web services, parsing XML, using the URL loading system, and making remote procedure calls using XML-RPC or SOAP.

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Apple Applications Schema Reference (HTML) (PDF)
Describes the schemas used by Apple Applications to sync records such as contacts, calendars, and bookmarks.
2007-10-31
Instant Message Framework Reference (HTML) (PDF)
Describes the API for providing iChat presence information to Cocoa applications and using iChat Theater.
2007-07-08
NSCachedURLResponse Class Reference (HTML) (PDF)
Describes a cached response to a URL load request.
2008-05-02
NSHTTPCookie Class Reference (HTML) (PDF)
Describes an opaque set of data that represents state or configuration.
2008-11-13
NSHTTPCookieStorage Class Reference (HTML) (PDF)
Describes a collection of cookies shared across all applications.
2006-05-23
NSHTTPURLResponse Class Reference (HTML) (PDF)
Describes a response to an HTTP request.
2006-05-23
NSMutableURLRequest Class Reference (HTML) (PDF)
Describes a mutable request for a resource identified by a URL.
2006-05-23
NSURL Additions Reference (HTML) (PDF)
Describes additions to support pasteboards.
2006-05-23
NSURL Class Reference (HTML) (PDF)
Describes a string that uniquely identifies a resource.
2009-02-04
NSURLAuthenticationChallenge Class Reference (HTML) (PDF)
Describes a challenge from a server requiring authentication from the client.
2006-05-23
NSURLAuthenticationChallengeSender Protocol Reference (HTML) (PDF)
Describes the interface for receiving authentication challenges.
2006-05-23
NSURLCache Class Reference (HTML) (PDF)
Describes a collection of cached responses and data.
2008-03-11
NSURLClient Protocol Reference (HTML) (PDF)
Deprecated - Describes the deprecated class replaced by the classes NSURLConnection and NSURLDownload.
2006-08-01
NSURLConnection Class Reference (HTML) (PDF)
Describes the class that provides support for retrieving data from a server in response to a URL load request.
2007-04-01
NSURLCredential Class Reference (HTML) (PDF)
Describes a credential used to authenticate a URL load request.
2006-06-28
NSURLCredentialStorage Class Reference (HTML) (PDF)
Describes a mapping of credentials to their corresponding protection spaces.
2006-05-23
NSURLDownload Class Reference (HTML) (PDF)
Describes a connection used to download data to a file.
2006-05-23
NSURLHandle Class Reference (HTML) (PDF)
Describes a deprecated technology replaced by the NSURLDownload class.
2009-02-04
NSURLHandleClient Protocol Reference (HTML) (PDF)
Describes a deprecated technology replaced by the NSURLDownload class.
2006-05-23
NSURLProtectionSpace Class Reference (HTML) (PDF)
Describes an area on a server that requires authentication of URL load requests.
2006-05-23
NSURLProtocol Class Reference (HTML) (PDF)
Describes the interface for protocol-specific loading of URL data.
2007-04-01
NSURLProtocolClient Protocol Reference (HTML) (PDF)
Describes the interface used by protocol objects to communicate with the URL loading system.
2006-05-23
NSURLRequest Class Reference (HTML) (PDF)
Describes a request for a resource identified by a URL.
2007-04-01
NSURLResponse Class Reference (HTML) (PDF)
Describes the metadata returned by a server for a load request.
2007-12-11
Publication Subscription Framework Reference (HTML)
Describes the Cocoa framework for publishing and subscribing to RSS and Atom feeds.
2008-04-08
Sync Services Framework Reference (HTML) (PDF)
Describes the Objective-C API for the Sync Services framework used to sync applications and devices.
2007-10-31
Web Services Core Framework Reference (HTML)
Describes the client-side APIs for accessing web services.
2009-01-06
WebKit Objective-C Framework Reference (HTML) (PDF)
Describes the Objective-C API used to display web content in windows.
2008-10-15